公开(公告)号：US20240230379A9

公开(公告)日：2024-07-11

申请号：US18097149

申请日：2023-01-13

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Lu-Pu LIAO ,  Yu-Sheng LIN ,  Liang-Ying LIU ,  Chin-Fu KUO

IPC: G01D5/24

CPC classification number: G01D5/24

Abstract: A reading device for capacitive sensing element comprises a differential capacitive sensing element, a modulator, a charge-voltage conversion circuit, a phase adjustment circuit, a demodulator and a low-pass filter. The modulator outputs a modulation signal to the common node of the capacitive sensing element and modulates the output signal of the capacitive sensing element. The two input terminals of the charge-to-voltage conversion circuit are connected to two non-common nodes of the capacitive sensing element. The charge-to-voltage converter read the output charge of the capacitive sensing element and convert it into a voltage signal. The modulator generates a demodulation signal through the phase adjustment circuit. The demodulator receives the demodulation signal from the phase adjustment circuit and demodulates the output of the charge-to-voltage conversion circuit. The low-pass filter is connected to the output of the demodulator for filtering the demodulated voltage signal to output the read signal.

公开(公告)号：US20230184567A1

公开(公告)日：2023-06-15

申请号：US17863341

申请日：2022-07-12

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Lu-Po LIAO ,  Chin-Fu KUO ,  Liang-Ying LIU ,  Yu-Sheng LIN

IPC: G01D5/24 ,  G01R27/26

CPC classification number: G01D5/24 ,  G01R27/2605 ,  G01D18/00

Abstract: The differential capacitor device includes a differential capacitor sensing component, a calibration capacitor assembly and two output terminals. The differential capacitive sensing element has a common point terminal, a first non-common point terminal and a second non-common point terminal, and the common point terminal is configured to receive an input voltage. The calibration capacitor assembly has a first calibration capacitor and a second calibration capacitor, one terminal of the calibration capacitor assembly is coupled to the first non-common point terminal and the second non-common point terminal, and the other terminal of the calibration capacitor assembly is configured to receive a first calibration voltage and a second calibration voltage. The two output terminals are respectively coupled to the first non-common point terminal and the second non-common point terminal to output a first signal and a second signal.

公开(公告)号：US20240133716A1

公开(公告)日：2024-04-25

申请号：US18097149

申请日：2023-01-13

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Lu-Pu LIAO ,  Yu-Sheng LIN ,  Liang-Ying LIU ,  Chin-Fu KUO

IPC: G01D5/24

CPC classification number: G01D5/24

Abstract: A reading device for capacitive sensing element comprises a differential capacitive sensing element, a modulator, a charge-voltage conversion circuit, a phase adjustment circuit, a demodulator and a low-pass filter. The modulator outputs a modulation signal to the common node of the capacitive sensing element and modulates the output signal of the capacitive sensing element. The two input terminals of the charge-to-voltage conversion circuit are connected to two non-common nodes of the capacitive sensing element. The charge-to-voltage converter read the output charge of the capacitive sensing element and convert it into a voltage signal. The modulator generates a demodulation signal through the phase adjustment circuit. The demodulator receives the demodulation signal from the phase adjustment circuit and demodulates the output of the charge-to-voltage conversion circuit. The low-pass filter is connected to the output of the demodulator for filtering the demodulated voltage signal to output the read signal.

公开(公告)号：US20210018376A1

公开(公告)日：2021-01-21

申请号：US16886036

申请日：2020-05-28

Applicant: Industrial Technology Research Institute

Inventor： Ying-Che LO ,  Yu-Sheng LIN ,  Ting-Hao HSIAO ,  Bor-Shiun LEE

IPC: G01K7/22 ,  G01D5/24 ,  G01K7/20

Abstract: A sensing device is provided. The sensing device includes a plurality of infrared thermosensitive elements and a plurality of resistor-capacitor (RC) oscillators. The plurality of infrared thermosensitive elements are arranged in an array. Each of the plurality of infrared thermosensitive elements has a resistance value which changes with a temperature of the infrared thermosensitive element by absorbing infrared radiation and generates a sensing voltage corresponding to the resistance value. The plurality of RC oscillators are coupled to the plurality of infrared thermosensitive elements to receive the corresponding sensing values, respectively. Each of the plurality of RC oscillators generates a digital sensing signal according to the corresponding sensing value to indicate the temperature of the corresponding infrared thermosensitive element. Each of the plurality of RC oscillators is disposed under the corresponding infrared thermosensitive element.

公开(公告)号：US20190154604A1

公开(公告)日：2019-05-23

申请号：US15856012

申请日：2017-12-27

Applicant: Industrial Technology Research Institute

Inventor： Ying-Che LO ,  Yu-Sheng LIN ,  Ting-Hao HSIAO

IPC: G01N27/04

Abstract: A resistive gas sensor is provided. The resistive gas sensor includes a sensing circuit and a determination circuit. The sensing circuit senses a gas to generate a detection signal. The determination circuit performs a frequency-division operation on the detection signal by a frequency-division parameter to generate a frequency-division signal, counts a half of a period of the frequency-division signal to generate a half-period count value, and determines concentration of the gas according to the half-period count value. The determination circuit determines the frequency-division parameter according to the half-period count value.

公开(公告)号：US20220074903A1

公开(公告)日：2022-03-10

申请号：US17125968

申请日：2020-12-17

Applicant: Industrial Technology Research Institute

Inventor： Ying-Che LO ,  Yu-Sheng LIN ,  Po-Jen SU ,  Ting-Hao HSIAO

IPC: G01N33/00 ,  G01L9/12 ,  G01K7/16 ,  G01N27/12 ,  G01L27/00

Abstract: A sensing device is provided. The sensing device includes a processing circuit and a multi-sensor integrated single chip. The multi-sensor integrated single chip includes a substrate and a temperature sensor, a pressure sensor, and an environmental sensor disposed on the substrate. The temperature sensor senses temperature. The pressure sensor senses pressure. The environmental sensor senses an environmental state. The processing circuit obtains a first sensed temperature value from the temperature sensor when the environmental sensor does not operate, and it obtains a second sensed temperature value from the temperature sensor when the environmental sensor operates. The processing circuit obtains a sensed pressure value from the pressure sensor. The processing circuit obtains at least one temperature calibration reference of the pressure sensor according to the first and second sensed temperature values and calibrates the sensed pressure value according to the temperature calibration reference.